JP2015122233A - Remote controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote controller capable of sufficiently achieving prevention of static electricity from intruding from a gap around operation buttons without using means of shielding and sealing with an insulation sheet.SOLUTION: A peripheral wall 33 is made to be protruded backward from a back face of an operation button 31 and a peripheral wall 251 is made to be protruded forward as a movable part 25. An outer peripheral side of the peripheral wall 251 of the movable part is assembled so as to be surrounded by the peripheral wall 33 of the operation button and both peripheral walls 33, 251 are overlapped in a double wall state. Even when static electricity intrudes into a substrate 6 side from outside, two foldings become necessary at a protruding end of the peripheral wall 33 and at a protruding end of the peripheral wall 251.

Description

  The present invention relates to a remote control and relates to an electrostatic countermeasure technique for preventing intrusion of static electricity from around a push button type operation button.

  As a push button type operation button, there is known one in which a human pushes an operation button so that the push operation force is transmitted to a switch on an internal substrate to switch the switch. In such an operation button, there is a possibility that human static electricity will be discharged to the switch when the button is operated due to the presence of a gap around the operation button, which may adversely affect the electric circuit on the board. For this reason, for example, Patent Document 1 proposes a countermeasure for increasing the static electricity flow distance by covering the substrate with an insulating sheet in order to prevent static electricity from entering around the operation buttons of the remote controller. Further, in Patent Document 2, the operation button is subjected to conductive plating, and the flange-shaped shielding portion is formed by synthetic resin molding in a state where the conductive plating is not formed so as to protrude from the lower position to the periphery. It has been proposed to increase the withstand voltage performance. Further, in Patent Document 3, a cylindrical annular rib is formed inside the opening where the operation button is exposed from the cover, while the operation button protrudes from the lower part to the outer periphery and can slide on the annular rib. It has been proposed that the operation button is positioned at the center position of the opening and that static electricity can be prevented from entering in a straight line by forming an annular guide portion that fits into the opening.

Japanese Patent Laid-Open No. 10-106380 Japanese Patent No. 3871136 Japanese Patent No. 4624251

  As a measure to increase the certainty of prevention of static electricity intrusion from around the operation button, for example, an insulating sheet is stuck on the surface of the movable part (operation button side) for transmitting the operation force to the switch on the board, It is conceivable that the insulating sheet is sealed. However, when this measure is adopted, the degree of freedom in structural design is reduced in consideration of various operation parts, and the manufacturing cost may be increased. On the other hand, with the structure of the conventional operation button, countermeasures against static electricity are not sufficient, and realization of more advanced countermeasures becomes a problem.

  The present invention has been made in view of such circumstances, and its object is to sufficiently prevent electrostatic intrusion from the gap around the operation button without using a means for shielding and sealing with an insulating sheet. It is to provide a remote control that can be achieved.

  In order to achieve the above object, according to the present invention, the operation button is assembled so as to face the movable part formed on the casing, and the pressing operation force to the operation button is controlled via the movable part. The following specific items are provided for a remote controller configured to be transmitted to a switch on a circuit board. That is, the operation button is provided with a peripheral wall protruding toward the movable part, while the movable part is provided with a peripheral wall protruding toward the operation button. Then, the operation button is assembled to the movable portion so that the peripheral wall of the operation button surrounds the peripheral wall of the movable portion and both the peripheral walls overlap with each other in a double wall state.

  In the case of this invention, even if static electricity enters through the operation button from the front side, first, it proceeds to the movable part side along the outer peripheral side of the peripheral wall of the operation button, and then protrudes from the peripheral wall of the operation button. Folded at the end, proceeded in the opposite direction between the peripheral wall of the operation button and the peripheral wall of the movable part, and again folded at the protruding end of the peripheral wall of the movable wall, along the inner peripheral side of the peripheral wall of the movable part Will follow the route to. That is, it is possible to obtain both the effects of the static electricity intrusion inhibition associated with the two turn-backs and the intrusion inhibition associated with the creepage distance being significantly longer than in the case of proceeding linearly. Accordingly, it is possible to sufficiently prevent the intrusion of static electricity from around the operation button without using a means of shielding / sealing with an insulating sheet.

  In the remote controller of the present invention, a plurality of movable parts can be arranged adjacent to each other in parallel, while a plurality of movable parts can be arranged in parallel at positions corresponding to the plurality of movable parts as operating buttons. Item 2). By doing so, even if there are a plurality of operation buttons, it is possible to reliably prevent static electricity from entering each operation button.

  As described above, according to the remote controller of the present invention, even if static electricity enters through the operation button from the front side, first, it proceeds to the movable part side along the outer peripheral side of the peripheral wall of the operation button. After that, turn back at the protruding end of the peripheral wall of the operation button, proceed in the reverse direction between the peripheral wall of the operation button and the peripheral wall of the movable part, and then turn back again at the protruding end of the peripheral wall of the movable wall. It is possible to follow a route to the control board side along the circumferential side. That is, it is possible to obtain both the effects of the static electricity intrusion inhibition associated with the two turn-backs and the intrusion inhibition associated with the creepage distance being significantly longer than when proceeding linearly. Accordingly, it is possible to sufficiently prevent the intrusion of static electricity from around the operation button without using a means of shielding / sealing with an insulating sheet.

  According to the remote control of claim 2, by arranging a plurality of movable parts adjacently in parallel, a plurality of the movable parts are arranged in parallel at positions corresponding to the plurality of movable parts as operation buttons. Even if there are a plurality of operation buttons, it is possible to reliably prevent static electricity from entering each operation button.

1 is an overall perspective view of a remote control according to an embodiment of the present invention. FIG. 2 is a view corresponding to FIG. 1 in a state where an opening / closing lid is opened. FIG. 3 is an exploded perspective view of a state in which a display cover, a button body, and an insulating sheet are removed from the remote control of FIG. 2. It is a partial expansion perspective view which shows the remote control of the state which removed the button main body. It is a partial expanded sectional view in the AA line of FIG. It is an expansion perspective view which shows the back surface side of the button main body of FIG. It is an expanded sectional view which shows the cross section in the BB line of FIG. 2 in a perspective view state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are schematic views of a remote controller according to an embodiment of the present invention. This remote controller can be used not only for remotely operating a hot water supply apparatus, for example, but also for remotely operating an apparatus other than the hot water supply apparatus. In this remote control, a button main body 3, a display cover 4, an insulating sheet 5 and the like are assembled to a box-shaped case main body 1 in which a control board and a liquid crystal display (not shown) are accommodated. (See also FIG. 3). The casing is mainly constituted by the case main body 1, and these can be formed by, for example, synthetic resin molding. The remote controller of this embodiment is used by being attached to a wall surface in the state illustrated in FIGS. Hereinafter, the terms up and down, left and right, and front and rear are used for postures attached to a wall surface.

  An opening / closing lid 21 is rotatably attached to the lower end edge position of the case body 1, and can be converted into a normal closed state (the state shown in FIG. 1) and an open state (the state shown in FIG. 2) by rotating. It has become. An individual operation unit 22 covered with an opening / closing lid 21 is provided in the lower half of the case body 1. A plurality of movable parts 221, 221,... Are formed in a predetermined arrangement on the individual operation part 22, and the insulating sheet 5 is adhered or bonded to the front surface. Each movable portion 221 is supported in a cantilever form by a slit groove having a predetermined shape and is flexible in the front-rear direction (can be elastically deformed), and various switches on the substrate are located behind the center portion. Has been. Further, various operation button displays 51, 51,... Are printed on the insulating sheet 5 at positions corresponding to predetermined movable parts 221, 221,..., And the printed various operation button displays 51, 51,. By pressing from the front side to the rear side, the movable portion 221 is pushed and recessed toward the rear side, and the corresponding switch is switched. As the various operation button displays 51, 51,..., For example, in the case of a remote controller for a hot water supply device, “hot water supply temperature”, “volume”, “floor reservation” are used for temperature adjustment of the hot water temperature rise / fall side. ”,“ Clock adjustment ”,“ energy display ”, and the like.

  In addition, a plurality of (four in the illustrated example) button operation units 23 are provided in the left-right direction at the middle portion of the case body 1 in the vertical direction, and a window portion for exposing the liquid crystal display unit forward in the upper half. A display unit 24 including 241 is provided. The button operation unit 23 includes a predetermined number of movable units 25 and a holding unit 26 for holding and fixing the button body 3. As shown in detail in FIG. 4, the movable portion 25 extends from the bottom surface 250 (see also FIG. 5) recessed backward by a predetermined depth from the front surface of the individual operation portion 22 and the display portion 24 to the front (front side). An endless rib-shaped peripheral wall 251 that protrudes by a predetermined dimension, and an arm portion 253 that extends from the front end side position of the peripheral wall 251 to the center position and supports the center transmission portion 252 in a cantilever form. Thereby, when the center transmission part 252 is pushed to the rear side, the arm part 253 is bent by elastic deformation, so that the center transmission part 252 can move with respect to the rear side. The holding portion 26 (see FIG. 3) is configured by a recess recessed in a shape corresponding to the connection piece 32 so that a connection piece 32 (to be described later) of the button main body 3 can be inserted and accommodated. And the convex part 261,261, ... which protrudes ahead is provided so that it can insert in the positioning hole 321 of the said connection piece 32. As shown in FIG.

  On the other hand, as shown in FIGS. 3 and 4, the button body 3 is integrated with a predetermined number (four in the illustrated example) of operation buttons 31, 31,... Arranged side by side with a slight gap therebetween. It has been done. That is, although the operation buttons 31 are separated from each other and independent, they are integrally connected by a connecting piece 32 that extends upward from each operation button 31 and connects all the operation buttons 31, 31,. Yes. Each operation button 31 has, on the front, a display related to main operations such as “operation on / off”, “calling”, “tracking”, and “bath automatic”, as in the case of a remote controller for a hot water supply device. The front surface (front surface) is a part that is pushed by the user, for example, by hand, and the rear surface (rear surface) has an endless rib shape that protrudes rearward along the outer periphery by a predetermined dimension as shown in FIG. A peripheral wall 33 and a center transmission portion 34 projecting rearward from the center position are formed. Further, positioning holes 321, 321,... Are formed through the connection piece 32 so as to correspond to the operation buttons 31. 4 and 5, reference numeral 311 denotes a stopper piece that restricts the operation buttons 31 from entering the recess 222 and protruding forward.

  Are inserted into the holding portion 26 in a state where the convex portions 261, 261,... Are inserted into the positioning holes 321, 321,... Of the connection piece 32 of the button body 3 (see FIG. 3). When the display unit cover 4 is fitted into the display unit 24 in a state where the button unit 3 is inserted, the button body 3 (see FIG. 5) is held in a cantilever state fixed at the connecting piece 32 by the display unit cover 4. The center transmission part 34 of each operation button 31 held in the state is arranged in a state of contacting the front side of the center transmission part 252 of the movable part 25. At this time, the peripheral wall 33 of each operation button 31 of the button body 3 is arranged so as to surround the outer peripheral side thereof in a non-contact state with the peripheral wall 251 of the movable portion 25, and the protruding end (rear end) is a button. The projecting end (front end) of the peripheral wall 251 of the movable unit 25 is separated from the inner bottom surface of the operation button 31 by the predetermined dimension from the bottom surface 250 of the operation unit 23 by a predetermined dimension (the front-rear direction dimension required for the pressing operation of the operation button 31). It is set to be in the state. That is, the pushing operation is possible in a state where the peripheral walls 33 and 251 endless with respect to the left and right and up and down directions overlap with the double wall state. In addition, the rear surface side of the center transmitting portion 252 of the movable portion 25 is positioned in a state separated from the switch 61 installed on the substrate 6 by a slight dimension in the front-rear direction. As described above, when the front surface of the operation button 31 is pushed by the user, it bends to the rear side, and the pushing operation force can be switched by pressing the switch 61 via the center transmitting portions 34 and 252.

  In such a structure, as indicated by an arrow in FIG. 7, even if static electricity enters from the front side of each operation button 31 around each operation button 31, first, the peripheral wall 33 of the operation button 31. After moving backward to the bottom surface 250 of the movable portion 25 along the outer peripheral side, it is folded back at the protruding end of the peripheral wall 33, and the operation button 31 is moved between the inner peripheral side of the peripheral wall 33 and the outer peripheral side of the peripheral wall 251 of the movable portion 25. Proceeding forward to the inner bottom, turning back again at the protruding end of the peripheral wall 251 of the movable wall 25, and following the route to the substrate 6 side along the inner peripheral side of the peripheral wall 251 of the movable part 25. That is to say, it is possible to realize intrusion inhibition associated with two turn-backs and intrusion inhibition associated with the creepage distance being significantly longer than when traveling in a straight line. Accordingly, it is possible to sufficiently prevent the intrusion of static electricity from around the operation button 31 without using a means of shielding / sealing with an insulating sheet.

<Other embodiments>
In addition, this invention is not limited to the said embodiment, Other various embodiment is included. That is, in the above-described embodiment, the button main body 3 is shown in which a plurality of operation buttons 31, 31,... Are integrally connected by the connection piece 32. However, of course, the individual operation buttons may be individually assembled. Moreover, although the rectangular thing was shown as the surrounding walls 33 and 251, it is not limited to this, and it may be endless, and may be annular or polygonal. Further, the peripheral wall may not be a peripheral wall along the outer periphery of the operation button 31 but may be a peripheral wall protruding from the inner peripheral side position as long as it is endless.

31 Operation buttons 1 Case body (housing)
6 Substrate 25 Movable part 33 Perimeter wall 61 Switch 251 Perimeter wall

Claims (2)

The operation button is assembled so as to oppose the movable part formed on the housing, and the pushing operation force to the operation button is transmitted to the switch on the control board via the movable part. Remote control
The operation button includes a peripheral wall protruding toward the movable portion, while the movable portion includes a peripheral wall protruding toward the operation button.
The operation button is assembled to the movable part so that the peripheral wall of the operation button surrounds the peripheral wall of the movable part and both peripheral walls overlap in a double wall state.
A remote control characterized by that. The remote control according to claim 1,
A remote controller in which a plurality of movable parts are arranged adjacently in parallel, and a plurality of the movable parts are arranged in parallel at positions corresponding to the plurality of movable parts.

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